Overdrive (Dumble-style overdrive)
The Rowin LN-315 Gumble is an analog dumble-style overdrive pedal based on the Dumble Overdrive Special, made in China.
| Category | Overdrive (Dumble-style overdrive) |
| Circuit / based on | Dumble Overdrive Special |
| Signal | Analog |
| Switches | Normal/Bright mode toggle |
| Footswitches | 1 |
| Bypass | true bypass |
| True bypass | Yes |
| I/O | mono in / mono out |
| Power | 9V DC |
| Enclosure | mini |
| Country of manufacture | China |